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Currently I connect my electric guitar to my Audigy 2 using the Line Out
on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
I know this is the amp's fault, because I can hear it from the amp's own
speaker too, even when the guitar is not connected. This gets especially
annoying when I try to apply high gain VST effects. So I'm guessing I
need some sort of simple preamp to bump the guitar's output up to line
level. Can anyone recommend anything? I wouldn't mind building something
myself if I had a schematic, I can't imagine such a device being
terribly complex, so it could well be cheaper (and more fun) that way.

TIA

David

On Tue, 28 Feb 2006 15:53:45 +1300, David <> wrote:

>Currently I connect my electric guitar to my Audigy 2 using the Line Out
>on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
>I know this is the amp's fault, because I can hear it from the amp's own
>speaker too, even when the guitar is not connected. This gets especially
>annoying when I try to apply high gain VST effects. So I'm guessing I
>need some sort of simple preamp to bump the guitar's output up to line
>level. Can anyone recommend anything? I wouldn't mind building something
>myself if I had a schematic, I can't imagine such a device being
>terribly complex, so it could well be cheaper (and more fun) that way.
>
>TIA
>
>David

I used Jaycar kit KJ-8090 "Guitar Link"$15.95 to do the same thing for
my son. Powered by 8xAA cells. I'd recommend a metal box to simplify
keeping it immune from external fields.
The idiots at Jaycar sell the instructions for an extra $3. Let me
know if you want me to hand them onto you.

--
Regards
Malcolm
Remove sharp objects to get a valid e-mail address

David wrote:
> Currently I connect my electric guitar to my Audigy 2 using the Line Out
> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
> I know this is the amp's fault, because I can hear it from the amp's own
> speaker too, even when the guitar is not connected. This gets especially
> annoying when I try to apply high gain VST effects. So I'm guessing I
> need some sort of simple preamp to bump the guitar's output up to line
> level. Can anyone recommend anything? I wouldn't mind building something
> myself if I had a schematic, I can't imagine such a device being
> terribly complex, so it could well be cheaper (and more fun) that way.
>
> TIA
>
> David

50Hz is usually an earth loop.

DO NOT disconnect the mains earth.
Ensure all the mains cables are plugged into the same wall socket or
plugbox.

If your guitar amp works without the hum when the amp is not connected
to the Audigy then this is the most likely cause.

On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:

> Currently I connect my electric guitar to my Audigy 2 using the Line Out
> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
> I know this is the amp's fault, because I can hear it from the amp's own
> speaker too, even when the guitar is not connected. This gets especially
> annoying when I try to apply high gain VST effects. So I'm guessing I
> need some sort of simple preamp to bump the guitar's output up to line
> level. Can anyone recommend anything? I wouldn't mind building something
> myself if I had a schematic, I can't imagine such a device being
> terribly complex, so it could well be cheaper (and more fun) that way.
>
> TIA
>
> David

You could always try connecting your guitar directly to your Audigy2
microphone input. You just need a cable with a 3.5mm mono jack plug on the
end and a regular 6.5mm jack on the other.

Cheers,
John

On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:

> Currently I connect my electric guitar to my Audigy 2 using the Line Out
> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
> I know this is the amp's fault, because I can hear it from the amp's own
> speaker too, even when the guitar is not connected. This gets especially
> annoying when I try to apply high gain VST effects. So I'm guessing I
> need some sort of simple preamp to bump the guitar's output up to line
> level. Can anyone recommend anything? I wouldn't mind building something
> myself if I had a schematic, I can't imagine such a device being
> terribly complex, so it could well be cheaper (and more fun) that way.

Since you know the frequency, maybe a good filter on the software side
could filter your samples ? e.g. remove the 50hz buzz from the file ?

Hardly ideal, but maybe it'll work. I had some free software that would
analyze a (supposed to be silent) piece of the sample you specified, and
then remove those patterns/freq from the entire sample. Worked quite well
for cleaning up noisy samples - you just had to be careful not to over do
it.

I think Audacity does it; also some other free one some australian crowd
makes.

You'd just record a bit of silence on the end of the sample, which would of
course have the buzz in it, and use that for the analysis bit. Delete it
off afterwards.

I cleaned up a shitty sample off the answer machine doing this. And they
are hardly high quality recording devices... Why ? Long story, but I was
bored AND trying to figure out who it was (yeah, the recording was that bad
+ the person spoke fast and was not talking directly into the phone I
guess). It worked.

--

.... Brendan

#5775 +(8483)- [X]

* ab is away - gone, if anyone talks in the next 25 minutes as me it's bm
being an asshole -
<ab> HAHAHA DISREGARD THAT, I SUCK COCKS


Note: All my comments are copyright 1/03/2006 10:31:56 a.m. and are opinion only where not otherwise stated and always "to the best of my recollection". www.computerman.orcon.net.nz.

In article <1qwyem9unlymv$.>, J.Ferguson@
127.0.0.1 says...
> On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:
>
> > Currently I connect my electric guitar to my Audigy 2 using the Line Out
> > on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
> > I know this is the amp's fault, because I can hear it from the amp's own
> > speaker too, even when the guitar is not connected. This gets especially
> > annoying when I try to apply high gain VST effects. So I'm guessing I
> > need some sort of simple preamp to bump the guitar's output up to line
> > level. Can anyone recommend anything? I wouldn't mind building something
> > myself if I had a schematic, I can't imagine such a device being
> > terribly complex, so it could well be cheaper (and more fun) that way.
> >
> > TIA
> >
> > David
>
> You could always try connecting your guitar directly to your Audigy2
> microphone input. You just need a cable with a 3.5mm mono jack plug on the
> end and a regular 6.5mm jack on the other.

It is rather unlikely you would get good results this way. A guitar
preamp needs to have a very high input impedance and normally DIs are
specially designed with this in mind.

John A Fergusion wrote:
> On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:
>
>> Currently I connect my electric guitar to my Audigy 2 using the Line Out
>> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
>> I know this is the amp's fault, because I can hear it from the amp's own
>> speaker too, even when the guitar is not connected. This gets especially
>> annoying when I try to apply high gain VST effects. So I'm guessing I
>> need some sort of simple preamp to bump the guitar's output up to line
>> level. Can anyone recommend anything? I wouldn't mind building something
>> myself if I had a schematic, I can't imagine such a device being
>> terribly complex, so it could well be cheaper (and more fun) that way.
>>
>> TIA
>>
>> David
>
> You could always try connecting your guitar directly to your Audigy2
> microphone input. You just need a cable with a 3.5mm mono jack plug on the
> end and a regular 6.5mm jack on the other.
>
> Cheers,
> John

This sounds quite awful. As Rob J says, the impedance is badly mismatched.

Brendan wrote:
> On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:
>
>> Currently I connect my electric guitar to my Audigy 2 using the Line Out
>> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
>> I know this is the amp's fault, because I can hear it from the amp's own
>> speaker too, even when the guitar is not connected. This gets especially
>> annoying when I try to apply high gain VST effects. So I'm guessing I
>> need some sort of simple preamp to bump the guitar's output up to line
>> level. Can anyone recommend anything? I wouldn't mind building something
>> myself if I had a schematic, I can't imagine such a device being
>> terribly complex, so it could well be cheaper (and more fun) that way.
>
> Since you know the frequency, maybe a good filter on the software side
> could filter your samples ? e.g. remove the 50hz buzz from the file ?
>
> Hardly ideal, but maybe it'll work. I had some free software that would
> analyze a (supposed to be silent) piece of the sample you specified, and
> then remove those patterns/freq from the entire sample. Worked quite well
> for cleaning up noisy samples - you just had to be careful not to over do
> it.
>
> I think Audacity does it; also some other free one some australian crowd
> makes.
>
> You'd just record a bit of silence on the end of the sample, which would of
> course have the buzz in it, and use that for the analysis bit. Delete it
> off afterwards.
>
> I cleaned up a shitty sample off the answer machine doing this. And they
> are hardly high quality recording devices... Why ? Long story, but I was
> bored AND trying to figure out who it was (yeah, the recording was that bad
> + the person spoke fast and was not talking directly into the phone I
> guess). It worked.
>

Sounds interesting, but I don't really think this is what I want to do.
Also I would prefer not to have to use the amp for this at all, its big
and in the way and gets quite hot.

On Thu, 02 Mar 2006 15:16:02 +1300, David wrote:

> John A Fergusion wrote:
>> On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:
>>
>>> Currently I connect my electric guitar to my Audigy 2 using the Line Out
>>> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
>>> I know this is the amp's fault, because I can hear it from the amp's own
>>> speaker too, even when the guitar is not connected. This gets especially
>>> annoying when I try to apply high gain VST effects. So I'm guessing I
>>> need some sort of simple preamp to bump the guitar's output up to line
>>> level. Can anyone recommend anything? I wouldn't mind building something
>>> myself if I had a schematic, I can't imagine such a device being
>>> terribly complex, so it could well be cheaper (and more fun) that way.
>>>
>>> TIA
>>>
>>> David
>>
>> You could always try connecting your guitar directly to your Audigy2
>> microphone input. You just need a cable with a 3.5mm mono jack plug on the
>> end and a regular 6.5mm jack on the other.
>>
>> Cheers,
>> John
>
> This sounds quite awful. As Rob J says, the impedance is badly mismatched.

Did you try it, or is it the suggestion that sounds awful?

John A Ferguson wrote:
> On Thu, 02 Mar 2006 15:16:02 +1300, David wrote:
>
>> John A Fergusion wrote:
>>> On Tue, 28 Feb 2006 15:53:45 +1300, David wrote:
>>>
>>>> Currently I connect my electric guitar to my Audigy 2 using the Line Out
>>>> on my guitar amp. However, this introduces a reasonably loud 50Hz buzz.
>>>> I know this is the amp's fault, because I can hear it from the amp's own
>>>> speaker too, even when the guitar is not connected. This gets especially
>>>> annoying when I try to apply high gain VST effects. So I'm guessing I
>>>> need some sort of simple preamp to bump the guitar's output up to line
>>>> level. Can anyone recommend anything? I wouldn't mind building something
>>>> myself if I had a schematic, I can't imagine such a device being
>>>> terribly complex, so it could well be cheaper (and more fun) that way.
>>>>
>>>> TIA
>>>>
>>>> David
>>> You could always try connecting your guitar directly to your Audigy2
>>> microphone input. You just need a cable with a 3.5mm mono jack plug on the
>>> end and a regular 6.5mm jack on the other.
>>>
>>> Cheers,
>>> John
>> This sounds quite awful. As Rob J says, the impedance is badly mismatched.
>
> Did you try it, or is it the suggestion that sounds awful?

Sorry, I meant I tried it and it sounded awful, as if it was just a
note, but not played on a guitar if you know what I mean . Thanks for
the suggestion nonetheless.